First off a thanks to Kenneth for allowing me to post this.
I am in Perth WA and have two Maico 490's. One is a 1983 MX 490 Spider and the other a 1984 Super Cross 490.
I used the 83 model for enduros but fitted it with a wide ratio 5 speed USA sand spider gearbox but I still have the original 4 speed. It is also fitted with Honda CR500 front forks so as to have a front disc brake along with a custom rear disc I made using a Suzuki Quadracer caliper with a CR500 rear disc wheel. These additions were bolt ons and I have the original parts.
This bike has an awesome history being the first 1983 model imported into Australia by Ross King for use by Geoff Ballard when he rode for Ross and Maico. Geoff used it in several enduros and also in a Finke Desert Race. He also rode it in the 1983 Australian 4 Day Enduro Championship held in Bunbury, WA. I subsequently brought it from Ross as it saved him shipping it back East. I also have the Australian Dirt Bike magazine that did a feature article on it.
The 12th pic on this page shows Geoff on this bike at the 4 day. I started after him on my 1982 Alpha1 and gave him fuel to get going again.
https://www.picuki.com/tag/geoffballard I also have a 1984 SC 490 that I brought later for possible spares use and stripped it for storage purposes although I think from what I can now see the alloy rear swingarm has water damage.
I previously had a 1982 490 Alpha1 and also probably still have a few parts for that model.
I last rode the 83 in 1989 when I did one small stage of an enduro for nostalgia reasons and its been parked ever since.
This pic is of the 1983 model that I took in 2012 when I was doing a shed addition and located it still sitting behind a pile of junk,
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http://www.members.iinet.net.au/~ozrunner/graphics/Shed6.jpg Although I haven't made a definitive decision as to whether to sell these bikes I could be tempted with a realistic offer for both bikes as a single sale.
I could send them interstate at buyers cost if required.
Cheers
John